@import url("https://fonts.googleapis.com/css2?family=Press+Start+2P&family=Orbitron:wght@400;700;900&family=VT323&display=swap");

:root {
  --accent: #00ff88;
  --accent2: #ff006e;
  --bg-dark: #0a0a0f;
  --panel-bg: rgba(10, 10, 20, 0.92);
  --border: rgba(0, 255, 136, 0.3);
  --text: #e0e0e0;
  --snake-color: #00ff88;
  --font-pixel: "Press Start 2P", monospace;
  --font-display: "Orbitron", sans-serif;
  --font-retro: "VT323", monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: var(--bg-dark);
  color: var(--text);
  font-family: var(--font-display);
  min-height: 100vh;
  overflow: hidden;
  cursor: none;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(0deg,
      transparent,
      transparent 2px,
      rgba(0, 0, 0, 0.08) 2px,
      rgba(0, 0, 0, 0.08) 4px);
  pointer-events: none;
  z-index: 9998;
}

.btn-primary {
  font-family: var(--font-pixel);
  font-size: 0.65rem;
  letter-spacing: 2px;
  padding: 1rem 2.5rem;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  cursor: none;
  position: relative;
  overflow: hidden;
  transition: all 0.3s;
  clip-path: polygon(0 0,
      calc(100% - 12px) 0,
      100% 12px,
      100% 100%,
      12px 100%,
      0 calc(100% - 12px));
  text-transform: uppercase;
}

.btn-primary::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--accent);
  transform: translateX(-101%);
  transition: transform 0.3s;
  z-index: -1;
}

.btn-primary:hover {
  color: #000;
}

.btn-primary:hover::before {
  transform: translateX(0);
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-back {
  font-family: var(--font-pixel);
  font-size: 0.55rem;
  color: rgba(255, 255, 255, 0.4);
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0.5rem 1rem;
  cursor: none;
  transition: all 0.2s;
  letter-spacing: 2px;
}

.btn-back:hover {
  color: var(--accent2);
  border-color: var(--accent2);
}

.particle {
  position: fixed;
  pointer-events: none;
  z-index: 1;
  border-radius: 50%;
  animation: float-up 8s linear infinite;
  opacity: 0;
}

@keyframes float-up {
  0% {
    opacity: 0;
    transform: translateY(0) scale(0);
  }

  10% {
    opacity: 0.6;
    transform: translateY(-10px) scale(1);
  }

  90% {
    opacity: 0.3;
    transform: translateY(-80vh) scale(0.5);
  }

  100% {
    opacity: 0;
    transform: translateY(-90vh) scale(0);
  }
}

/* ── Responsive base ── */
@media (max-width: 650px) {
  .game-logo {
    font-size: 1.5rem;
  }

  .name-container {
    min-width: unset;
    width: 90vw;
    padding: 2rem;
  }

  #game-canvas {
    max-width: 95vw;
    max-height: 60vh;
  }

  .game-hud {
    width: 95vw;
  }

  .menu-layout {
    grid-template-columns: 1fr;
    width: 95vw;
  }

  .menu-right {
    display: none;
  }
}